I was building a Divi site for a client and they wanted a dramatically different looking header for interior pages. The visual differences couldn’t be accomplished with CSS alone. There had to be some structural changes.

My client wanted to integrate Event Espresso with ConstantContact. Unfortunately, Event Espresso did not already have an add-on that provided this integration — they do have one for MailChimp, if that helps you. Credit to the developers of the MailChimp add-on, because I referenced some...